Nalidixic acid
As of the edition of 20 October 2026, Nalidixic acid is a small molecule: marketed, first approved in 1982 (US); no US protection is listed.
Sources: FDA Orange Book and Purple Book, other approval registers, ClinicalTrials.gov, ChEMBL.
The drug
- Status
- Marketed; latest approval 1982
- Kind
- Small molecule
- Brand name
- Neggram
- First approved
- 1 January 1982 (US)
- Approvals on record
- 4 in 1 region
- Holder of the most recent approval
- Sanofi
US protection
No US protection is listed.
The FDA registers list no drug-substance patent or exclusivity that counts for this drug.
This is the US only.
Who has held its approvals
| Company | Role | Years |
|---|---|---|
| Concentra Biosciences | Earlier holder | |
| Sanofi | Later holder |